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Old 05-02-2012, 10:04 PM   #2 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,532

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
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Quote:
Originally Posted by Crono View Post
I couldn't tell from his thread if he had the xfi cam installed at the time of changing transmissions
I didn't at the time; I put the cam in later.

Quote:
I'm just wondering if anyone has experience of how it will drive. (I've noticed since switching to the xfi cam, I change gears a lot earlier than I used to
The XFi cam makes more torque at lower RPM, so it's an ideal match for the taller gearing/lower RPM for a given road speed. Considering your car is also a bit lighter than the 95's and up, it's an even better candidate.

The only reason I might caution someone against doing the 3.52 swap is if they happen to live in a VERY hilly place (it takes a bit more clutch slipping to get going in 1st gear), or if you do predominantly start/stop urban driving. You get most of your benefit from this swap by cruising in top gear at a lower engine RPM for a given road speed than you could before.

If those cautions don't apply to you, I'd say: do it! You'll like the results.

Just make sure you're getting the transmission with the 3.52 final drive. That's from the SOHC 1.3L Swift, not the one from the DOHC 1.3L 100hp GT/GTi model.
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Crono (05-07-2012)